搜索结果: 1-15 共查到“海洋物理学 The assimilation”相关记录38条 . 查询时间(0.052 秒)
Ensemble Kalman filter assimilation of temperature and altimeter data with bias correction and application to seasonal prediction
Kalman filter assimilation temperature and altimeter data bias correction and application seasonal prediction
2009/11/9
To compensate for a poorly known geoid, satellite altimeter data is usually analyzed in terms of anomalies from the time mean record. When such anomalies are assimilated into an ocean model, the bias ...
Detecting unstable structures and controlling error growth by assimilation of standard and adaptive observations in a primitive equation ocean model
unstable structures error growth standard and adaptive observations primitive equation ocean model
2009/11/9
Oceanic and atmospheric prediction is based on cyclic analysis-forecast systems that assimilate new observations as they become available. In such observationally forced systems, errors amplify depend...
Data Assimilation Tests with an Oceanic Mixed-Layer Model
Data Assimilation Tests Oceanic Mixed-Layer Model
2009/2/8
A data assimilation technique using a one-dimensional, ocean mixed-layer model to advance the thermal structure observations to the analysis time is tested. The effects of insertions of erroneous temp...
The problem of assimilating satellite altimeter data into an ocean model is considered for the case in which the ocean currents are weak, so that they can be represented by a superposition of linear R...
Assimilation of Altimeter Eddy Fields in a Limited-Area Quasi-Geostrophic Model
Altimeter Eddy Fields Limited-Area Quasi-Geostrophic Model
2009/1/9
Techniques for the synoptic analysis, vertical inference, dynamical adjustment, and forecast of altimetric and deeper in situ data are presented as a first step towards the design of continuous assimi...
Initialization and Data Assimilation in Models of the Indian Ocean
general circulation model Indian Ocean
2009/1/9
Numerical experiments have been conducted to investigate the effect of updating models of the Indian Ocean using simulated temperature (mass) and velocity data. Two models are used: a linear reduced g...
Ocean Data Assimilation and the Moan Filter：Spatial Regularity
Ocean Data Assimilation Moan Filter Regularity
2009/1/8
Ocean circulation models are infinite-dimensional dynamical systems. If the Kalman filter is used to assimilate data into such systems, then their infinite-dimensionality must be recognized. In other ...
Assimilation of Altimeter Data into an Ocean Circulation Model：Space versus Time Resolution Studies
Altimeter Data Ocean Circulation Model Space Time
2009/1/4
One of the most important forthcoming synoptic datasets for ocean circulation studies will he the sea-surface height data provided by the TOPEX /POSEIDON satellite. The TOPEX/POSEIDON project is in th...
A Global Oceanic Data Assimilation System
Global Oceanic Data Assimilation System general circulation models
2009/1/4
A global oceanic four-dimensional data assimilation system has been developed for use in initializing coupled ocean–atmosphere general circulation models and many other applications. The data assimila...
Aspects of Geostrophic Adjustment during Tropical Ocean Data Assimilation
Tropical Ocean Data Assimilation Geostrophic Adjustment
2008/12/30
Subsurface temperature data from the ship-of-opportunity network in the tropical Pacific Ocean was assimilated into a simple reduced-gravity model. A large initialization shock was found to occur in t...
Data Assimilation Applied to the Temperature and Circulation in the Tropical Atlantic, 1983–84
Data Assimilation complete temperature velocity fields Tropical Atlantic
2008/12/27
A hydrographic dataset based on data from the SEQUAL/FOCAL experiment is used to determine the errors of a numerical simulation of the complete temperature and velocity fields of the tropical Atlantic...
Variational Assimilation of XBT Data. Part II. Sensitivity Studies and Use of Smoothing Constraints
Variational Assimilation XBT Data Smoothing Constraints
2008/12/27
A linear reduced-gravity model of the tropical pacific is used to assimilate XBT data. The model cannot fit the data in the eastern equatorial Pacific for the whole assimilation period. Several experi...
Variational Assimilation of XBT Data. Part 1
variations method assimilate data gravity model tropical Pacific
2008/12/27
A variations method based on the adjoint equation technique is used to assimilate data in a relatively simple linear reduced gravity model of the tropical Pacific. Real XBT data are used by identifyin...
Data Assimilation in a Quasi-geostrophic Open-Ocean Model of the Gulf Stream Region Using the Adjoint Method
quasi-geostrophic Gulf Stream Region Quasi-geostrophic Open-Ocean Model
2008/12/23
The method of adjoint data assimilation is applied in a quasi-geostrophic (QG) open-ocean model of the Gulf Stream region. The results of data assimilation experiments are presented in which simulated...
The Role of Integration Time in Determining a Steady State through Data Assimilation
general circulation model Data Assimilation
2008/12/23
The length of time an ocean model and its adjoint should be integrated in determining a steady state compatible with observed data is investigated. The starting point is based upon a suggestion that o...